Molding apparatus for glass candlesticks.



A. J. SANFORD.

MOLDlNG APPARATUS FOR GLASS CANDLESTICKS.

APPLICATION FlLED JUNE 24,1913.

Patented Aug. 14, 1917.

2 SHEETS-SHEET I- Wm Wm 2 mu A. J. SANFORD.

MOLDiNG APPARATUS FOR GLASS CANDLESTICKS.

Patentea Aug. 14, 1917.

2 SHETS-SHEET 2.

APPLICATION FILED JUNE 24,1913- ml mvamem WITNESSES.

ANDREW J. SANFORD,

on NEWARK, onto, nssxouon so A. n. HEISEY & 00., on NEWARK, OHIO, A ooren'rnnnsmn;

HOLDING. A'PPARATUS FOE GLASS GANLDLESTIGKb To all whom it may concern:

Be it known that I, ANDREW J.- SANFORD, a citizen of the United States, and resident of Newark, in the county of'Licking and State of Ohio, have invented a new and useful Improvement in Molding Apparatus for Glass Candlesticks; and I do hereby declare the following to be a full clear, and exact description thereof.

My invention relates to appaiatus for molding and blowing glass-articles, and is particularly, though not exclusively, concerned with apparatus of this character for providing a glass candlestick with a suit able passage for the reo-ption of an electric conductor whereby the candlestick or standard may be used as the standard of an electrio light. The arrangement of the electric conductor is such as to more or'less conceal the conductor Within the candlestick and to make the electrical connection as" little prominent as possible. The invention is particularly concerned with means for blowing a passage longitudinally of the candle stick and providing connection of such passage with the outside of the candlestick in the most expeditious and economical manner possible.

With these and other objects in View, as will appear from the following description,

the invention consists inthe construction and arrangement of parts, one embodiment of which is illustratedin the accompanying drawings, in which Figure'l is a longitudi nal sectional view, parts being in elevation, through 'the molding apparatus on the line 1-1 Fig. 3; Fig. 21s a view similar to Fig. 1' showing the parts in dificrent operatlve position; Fig. 3 is a plan view of the apparatus; Fig. is a. fragmentary sectional view of certain details of c'onstruction; Fig. 5 is a fragmentary view'similar to Figs. 1 and 2 of a modified form oiithe apparatus; Fig. ,6 is a longitudinal sectional view of the form 'of article produced by the apparatus shown in Figs. 1 to 4 inclusi e; Fig. 7 is a similar view of an article produced by the apparatus illustrated. in Fig. 5.

In the manufacture of candlesticks which are to be employed as electroliex-s, dilliculty has been experienced in connecting the elec tric conductors to; the lamp in a. manner which will present a sightly appearance which at the same time is econoniical with respect to the construction of the standard Specification of letters Patent.

natented An 14, ion.

Application filed June 24, 1913. Serial No. 775,601:

of the cand estick. Asheretofore constructed, suchca dlesticks have been molded in hollow form-end a lead pa ssage from the exterior to th'i-nterior of the candlestick is afterward formed. The production of a candlestick of such form requires considerable expenditure of time and results inn'n article of more or less unsightly appearance.

The object. of this invention therefore is to overcome these objectionable featurw and consists, generally stated, in the molding of the exterior shape of the candlestick and while the article is still in themold,'blowing a passage longitudinally of the body of-the article while the glass is still in a partially molten state and also forming a. passage from the interior bore of the article to the outer surface through which the conductors may be readily threaded.

Referring to FigsJl to"3,inclusive, land 2 indicate the halves of 'a sectional glass mold, said sections being pivoted together upon a pin 3 passing through the hinge lugs 4L and 5, while, the opposite. sides 'of the molds are secured together by means of a pintle 6 passing through similar lugs and 8. Each mold section may, as usual, be pro 'vided with convenient handles 9 and 10.

In assembling the mold, the main mold sections 1 and 2 are closed about a. ring-like portion 11 projecting upwardlyifroin the bottom plate 12 ofthe mold. This bottom plate draw bar 17 having a convenient handle.18.-

The main valve head 16 is provided with a nozzle 19 which projects through and fits closely within an aperture 20 in the ring portion-of the bottom plate 12. This nozzle 1? is tapered for" the portion of its length which projects normally above the ring portion. 11. Within the valve head is mounted .avalve stem 21 having a closing portion 22 head. This aperture 2-3 communi tes with adapted to close the aperture 23 of the valve il in turn a chamber 24 in the valve head whic is adapted to communicate with a passage the air may be regulated and controlled.

The valve actuating draw bar 17 is provided -Wll3h a cam slot 28 through which passesa pin 29 fixed to the valve head 16. Likewise the draw bar is provided with a .second camslot 30 through which passes a pin 31 extending transversely of a slot 32 of the base of the valve stem 21. From an inspectlon of Figs. 1 and 2, it will be seen that when valve stem'to effectually close the aperture the draw bar is in normal closing position as shown in Fig. 1, the pins 29 and 31 of the valve head and valve stem respectively are held in such position by the slots 28 and of the draw bar as'to hold the valve head 16 in elevated position causing its nozzle to project well into the mold cavity of the mold sections 1 and 2, and holdin the straight portion 19'.in a position to e 'ectually close.

the aperture 20 in the ring portion 11 of the base plate of the mold. Likewise the pin 31 of the valve stem 20 is heldin such position asto cause the closing end 22 of the 23 of the valve head nozzle.

Mounted upon the top of the-main mold sections after the mold has been-closed is the top font 34; also'formed in sections hinged together, so that it may be closed to the ra sed ring-like ortions 35 of the mold sec-' tion and thus eld accurately in register with the molding cavities 11') said section. This top font is provided with a neck opening 36 which expands as at 37 to communicate with the plunger guide and fillingring 38 which ring is adaptedto receive theusual portion of thebore of the plunger ring is widened somewhatas plunger 39. The lower at to prevent wedging of the glass between the'plunger and the sides of the ring which Wedging action might result cutting or abrading the ring and plunger.

Before going further into the details of construction, the mode of operation of the parts thus far indicated will be described. With the main mold sections closed upon the bottom plate 12 and locked in closed posi-- tion and the top font and plunger ring in place, as indicated in Fig. 1, the mold is filled with glass preferably to theline of the bottom edge of the plunger ring 38: The plunger 39 is then brought down tothoroughly spread the glass throughout the interior of the mold and to firm the same therein. During each operation some of the glass flows up into the annular cavity 40 of passage 25 into register with the air inlet pipe 26 so that when the control cock'27 is form of mold sections here illustrated that" the lower ends-of these sections are" interiorly threaded as at 4.4 to form corresponding threads on what will be in the completed article the upper end of the candlestick for the ready reception of the threaded shankof the electric lamp. 7

In order to provide apassage extending from the central bore -of the 'candlestick to the side thereof in' order to permit of the lateral entrance of the electric conductnrs,a

passage molding pin 4-51 is provided hay ng a 4 somewhat reduced end 4p adapted to project within the base forming portion 47 of the mold. This passage forming pin is slidably .mounted in a guideway 48 in the mold section 2, and an actuating draw bar 49 is pror vided therefor having a. cam slot 50 which engages a pin 51 fixed to the passage form-- ing pin 4 5. By this construction and arrangement'and after the glass has been cast within the mold and around thispassage forming pin 45 and after the blowing oper ation has taken place, this passage forming.

pin may be withdrawn from the mold cavity to permit of ready removal of the article from the mold. Also after the mold and blowing operations have been performed the tapere valve head 19 may be withdrawn from the mold cavity by further movement of the valve actuating draw bar 17, which further action will'cause a pin- 29 of the valve head to travel down the inclined portion of the cam slot28 and simultaneously the valve stem may be further withdrawn by travel of its cam pin-31 down the second inclined portion of the slot 30 in the draw bar, thereupon the mold sections may be opened and the article removed.

In order to bring the lateral passage forming pin 45 into communication with the central passage 42 of the'candlestick the surplus neck portion 37 formed by the top font may be cracked oil and thereupon the base of the candlestick or article is ground toconcave form indicated by dotted line 52. This operation as will be seen from Fig. 2 opensdirect communication between the longitudinal passage 42 of the candlestick and the lateral passage 45 formed by the lateral" oral body.

neeepee pessege forming pin 45 whereby the electric conductor may be threaded through its latpassa-ge and into the central eendle Stick. i

Referring now tethe modified form of the construction illustrated in Fig. 5, the

operation of cestingthe body portion of the forming plunger 53 from engagement with the base of the candlestick, said plunger 18 provided with cam slot 53 engaged by an eccentrie pin mounted on a short stud '7 3ournaled a bearing 58, said. stud having j handle 59 by which said eccentric pin may I ,be moved to actuate the plunger. I

.ebmxedescription 1t will be seen that the mold ng of the article and the formation i of the Longitudinal and lateral passages From the therein isczirried out in one continued series of operations. Furthermore, the blowing oi the central posse-go in the candlestick may be regulated us to leave comparatively thick walls so that the appearance of a more or less massive crystal candlestick is secured. Furthermore, by forming the lateral passage described, the complete passage from the side to the interior of the candlestick may be secicured by the simple operation of grinding out the concave recess at the base of the candlestick, formation. of which recess the time secures the standard of the candlestick in the usual manner. It will be seen therefore that the production of the candlestick together with the pessages neoesser'y for the reception of elec' tricel conductors :aney be carried out simultaneously thus securing both economy n production and at the some time the formetion of the longitudinal and leterel-pesseges in the candlestick do not detract from the ornament-oi appearance thereof.

What 1 elsnn, is: 1. in glass etion with en article-mold, :1 base plate tlnreior, and a top font, of e presser plunger operating said font,.,a valve heed eheating into said mold opposite said .iunt having a valve therein, and

Cmeene for opening said valve to blow a peesege through said ertiole after the with drewel of the plunger.

e, glass molding end blowing apps molding and blowing appef' retus, the cm rates, the combination oi a mold, a base plate therefor, and a top font at the upper end of the mold, With e presser plunger operating in said font, a valve head operating through said base plate and having a valve stem, and means for immediately thereafter opening said valve to blow a pas sage through said article after the Withdrewel of the plunger.

3. In 3, glass molding and blowing apperetus, the combination of a, mold, a base plate therefor, and a top font at the upper end of the mold, with a presser plunger operating in said font, a valve head extending through said base plate, and having a velvestem therein, means for opening said valve to blow a passage through the article, and means for Withdrawing the velvehezid from Within said mold.

4:. In e gless molding and blowing apps.- ratus, the combination Withe mold, a. base plate therefor, and a top font at the upper end of the mold with o presser plunger operating in said font, of a valve head projecting into said mold through the base through said article, and means for forming a passage lending fromthe exterior of said article toward the upper end of said central passage.

5. In at glass molding and blowing apparetus, the combination with a. mold, a base plate therefor, and a top font at the upper end of the inold With a presser plunger operating in said font, of a valve head projecting into said mold having a, valve stem therein, means for opening said valve for blowing passage longitudinally through said article, and means for forming a lateral depression extendii'orrned.

6. in e glass molding and blowing appere-tus, the combination of a mold, a base plate therefor, and e top font at the upper end of the mold with s presser plunger operating in said font, a. valve head projecting into one end of said mold having a, valve .gtovverd the passage so "piste -halving a valve stem therein, means .ior "opening said valve to blow a passage stein means for opening said valve to blow e passage extending longitudinally through said article, means for forcing a laterally eX- tending passage Within the erticleand leading towed seid longitudinel passage.

7. ln glass rolding and blowing apperetus, the combination of a mold, a base plate therefor, end s top font at the upper end of the mold with a presser plunger operating in said font, a, plunger guide ring mounted in said font, Inez-ins for Withdrawing said plunger from the guide ring, a, valve projecting into the opposite end ofeeid' mold having a valve stem therein, means for openinv said valve to blow a, paseageiongitudinelly through seidertiole end toeerry the snrphze ,fless in the form of a.

bubble into said plunger ring, a passage forming member constructed and arranged .operating through said base plate having a valve stem therein, an actuating bar operating transversely of said valve head, and having means to open said valve to blow a passage through said article and having means to thereafter withdraw said valve head and valve from the mold.

9. In a glass molding and blowing appa ratus, the combination of a mold, a base plate therefor, and a top font at the upper end of the mold with a presser plunger operating in said font, a shiftable valve head operating through said base plate having a valve stem therein, an actuating bar operating transversely of said valve head, and having means to open said valve'to blow a passage through said article and having means to thereafter,withdraw said valve head and valve from the mold, and a later-- ally shiftable plunger operating through the side of the mold to form a lateral passage in the base.

10. In a glass molding and blowing apparatus, the combination of an article mold, a base plate therefor, a top font, a plunger operating in said font, a valve head projectin into the end opposite to said font and adapted to blow a longitudinal passage through the article after the removal of the font, and means for forming a lateral passage in the article extending from its outer face toward the longitudinal passage so blown through the article.

11. In a,glass molding and blowing apparatus, the combination of a sectional article mold, a base plate carrying the sections of said mold and, located at the lower end there- -1 of, a top' font overlying the upper end of said mold, means for blowing a. passage aeeaeea ,mold sections and located at the lower end of the mold cavity, means operating from said base plate to blow a passage longitudinally through the article, a top font overlying the upper end of said mold, a plunger operatin in said font to compress the glass within it said plunger, and a second plunger adapted e mold, means for withdrawing to operate through the side of the mold cavity near the upper end thereof to open a lateral passage to a point adjacent said longitudinal passage.

13. In a glass molding and blowing apparatus, the combination of a mold composed of longitudinal sections, a base plate carrying said mold sections, a valve head plunger operating through said base plate having a valve stem therein, a top font overlying the upper ends of said mold section, a presser plunger operating insaid top font, a valve actuating draw bar operating transversely through the base of the mold, and having cam connections with said valve head plunger and said valve stem whereby said valve may be opened by said draw bar-to I blow a passage longitudinally through the molded article and whereby said valve head may thereafter be withdrawn from the mold cavity. and a plunger operating in the upper end of the mold to form a lateral passage extending from the outer surface of the article into proximity with said central passage, means for actuating said last named plunger to withdraw the same from the mold cavity.

In testimony whereof, I the said ANDREW J. SANFOR have hereunto set my hand.

- ANDREW J. SANFORD. Witnesses:

MAX'B. NORPELL, GEORGE A. BLOOD. 

